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Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington , D.C. 20549 X ANNUAL REPORT PURSUANT TO SECTION 13 OR 15 ( d ) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended March 31 , 2021 or TRANSITION REPORT PURSUANT TO SECTION 13 OR 15 ( d ) OF THE SECURITIES EXCHANGE ACT OF 1934 FORM 10 - K ( Mark One ) For the transition period from Commission File Number 001-13449 Quantum Delaware ( State or other jurisdiction of incorporation or organization ) to Quantum Corporation ( Exact name of registrant as specified in its charter ) 224 Airport Parkway Suite 550 San Jose CA ( Address of Principal Executive Offices ) 94-2665054 Title of each class Common Stock , $ 0.01 par value per share ( I.R.S. Employer Identification No. ) 95110 ( Zip Code ) ( 408 ) 944-4000 Registrant's telephone number , including area code ( Former name , former address , and former fiscal year , if changed since last report ) Securities registered pursuant to Section 12 ( b ) of the Act : Trading Symbol QMCO Name of each exchange on which registered Nasdaq Global Market Securities registered pursuant to Section 12 ( g ) of the Act : None Indicate by check mark if the registrant is a well - known seasoned issuer , as defined in Rule 405 of the Securities Act . Yes No